When you do something socially unacceptable because you forget that there are people around. This is anything dumb that you would only do when you're alone, except you do it in public for everyone to point and laugh at you.
Scratching your balls in public is an example of skipping the flump

Person 1: Dude, stop scratching your balls in public
Person 2: Sorry, i just skipped the flump
by lonelyminnesotan April 17, 2015
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A man named Dustin who loves a woman named Thea. But mainly her Butthole.
by McawesOmega December 21, 2018
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A Butt that is big and white and bounces alot when jumping.
Bkdavill: Hey Nick, you see that girls ass shaking?

Nick: Yeah but this chick over here has a Flumping Ass.
by Bkdavill August 23, 2010
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a dorky kid that waddles because of his/her out-of-proportionally large ass
that kid's a flump cake.
by Ballz13 December 1, 2009
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inserting a flump between two buttocks of a female during sex and the male eats it
"Mann last nightt after we got the treats from Tesco's we were totaallyy flump buttocking each other"
by Lily_kicks_ass_ October 7, 2007
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A guy who gives flowers to a girl that doesn't like him.
That guy walking down the street with those roses is a total flump chump - she already has like 5 boyfriends.
by ManFlow December 11, 2009
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The act of engaging in wicked, rough anal sex. The word "flump" comes from the sound that the "givers" crotch makes when slapping against the "takers" bum.
I know she's not really into it, so I lubed up good and surprised her with some crazy rumpus flumping!
by flumpRus February 8, 2011
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